Pharyngeal inhaler.



C. K. TETER.

PHA RYNGE AL INHALER. APPLICATION FILED OCT. 17. 1914.

Patented June 25, 1918'.

drawings wherein:

GIIAJRIILES K. TETER, 0F CLEVELAND, OHIO, ASSIGNOR TO THE TETERMANUFACTURING COMPANY, 013 CLEVELAND, OHIO, A CORPORATION OF OHIO.

rHAnYnGEAL INI-IALER.

To all whom it may concern:

Be it known that 1, CHARLES K. T TER, a .citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Pharyngeal Inhalers, ofwhich the following is a specification.

My invention relates to improvements in pharyngeal inhalers, and has forits object the provision of simple and eflicient inhaling apparatus forconveniently continuing the anesthesia of a patient indefinitely, with-"out the loss or dilution of the anesthetizing reagents, while insuringthe normal breathing functions of said patient. i

One of the most common difficulties experienced during continuedanesthesia is the closing of the patients throat, by reason of thetongue sliding back and thereby restricting or checking thev breathing.Furthermore, it is found that the ordinary facial or nasal inhaler islikely to permit the leakage of air, as well as the escape and loss ofgas,

which are conditions thatshould be care fully avoided duringcontinuedanesthesia.

Accordingly, I have provided an appli ance which is, adapted to besubstituted for the ordinary inhaler, as soon as the patient is underthe influence of the anesthetic,fand

said appliance serves positively to holdthe tongue in position, maintainnormal breathing conditionsunder a definite pressure of gas, and preventthe escape orwaste of the anesthetic. To this end, I have provided acurved and flattened pharyngeal tube terminating in suitably positionedopenings to prevent their obstruction in the patients throat. Associatedwith said tubethere is provided a positive pressure valve adapted toinsure. a definite gaseouspressure, a contiguous gas-bag or reservoir,an interior or labial shield for the patients mouth, and an exteriorapron adapted to. be strapped tightly about the patients mouth and serveto hold the device in proper position, during anesthesia. The detailsand further functions of the appliance may best be explained by makingreference to the accompanying Figure l is a view of th appliance sideSpecification of Letters Patent. Pgflbmmbed June 25, 191,

Application filed October 17, 1914. Serial No. 867,103.

ing apparatus, andmore particularly one adapted for administeringnitrous oxid and oxygen, such as shown in Letters Patent No.

883,987, April 7th, 1908. This constitutes an anesthetizing gas pressuresupply line,with' which my inhaler is used. It is unnecessary todescribe such apparatus, but I may state that the gas-bag a terminates-asupply tube through which the anesthetizing gases are adapted to beadmitted by suitable controlling Valves. This gas bag or reservoir (1 isattached at the extremity'of the anesthetiz- ,ing-gas pressure supplyline, and ordinarily is positioned in close proximity to the patient,preferably. resting upon the forehead, so that there need be nofluctuation in the flow of gases through the supply line, and

the breathing of the patient will not affect the definite pressureinsured by the positive pressure valve through which the exhalations ofthe patient are directed. lfhis valve is provided with a graduated stem72 whereefiecting the corresponding compression of a weak spring 0. Thevalve part 0 and spring are of such light weight as to be operated bythe breathing of the patient, yet the spring is capable ofsufficienttension to insure a positive gas pressure of the anesthetic withinthelungs of the patient.

In order to increase the absorption by the blood of the anesthetizinggases, or vapors, suchas ether, the positive pressure valve serves toinsure a constant adjustable, gaseous pressure within the respiratoryorgans of the patient,suificient to prevent anyj'col- Jon the adjustablecollar and set screw 6 may be secured in any desired position for lapseof the lungs, Ordinarily such gas pressure ranges between two andtwentyi'our millimeters, whereby actual distension of the lungs maybeefiected,

ac d tether Tr n eet n. Z is. the pharyngeal tube e," which isterminally flat tened as best shown in Fig. 2 and is adapted tobeiinserted through the mouth of the pa-. tient, as soon asanesthesiahasbeen induced. This tube 6 serves to fit beneath, and hold the tongue6" in position, while a terminalboss 6' upon the tube, preferably formedof lead, is provided with openings upon three sides and the bottom, inorder to prevent any obstruction of the patients breathing. This ead bes erve t preven ac rations of the mouth, ongue and" ph ryn whi h i iigh'be c us d yt ieshatp e ge h tu e. r a

Addi ional bosse or nla gem n s, f of, also' j lea-d or a' e 'at ii' y'oft31 33 are o wardly positioned upon the tube 6 and are respec i e yadap ed f he at c m nt of the, 'ep tu ate, bial, inn Shi d 9, Whi

the raaa'vu soa material oftl e enlarge- Iueutf e gagesa d pre ents th beak g tithe; hipp ng f th p ti ii s, t'eetl'i, ,This

labial shi d a tends an ai -t g t eal fo the patients"mouth, when said'shield is slipped between the lips and gums the forme b ing depr d by heru er apre ih,

v li ehi'ie Se ur d t he ba k ottlie patients ahead and Iie kI y c r sh;

Inpiia'c tica it is of course necessary to: check the;v breathing th patent h o gh he m et}? app ying an, o dinary nas l. mp,

f l that he ih af ion mu e ni en irely through the rubber gasbag orreseryoir a,

which affords fsufiicient reServe supply to P event any" l wering of thedjusted ge iiresstra', e n with e p br hing; A cordi'ngi the ope at rmay reg flthe. flow bf he a e het c to Suit the eryin'gri q ir ments ofthe; patient, with the. full lniowledge 'that'the mixture ofnitrousloxidand oxygen or other anesthetizing reagents in L QIf iQQt Pl'PQ T l011S, is not subj eat to dilution or d1m1nut1onfrom loss,Furthermore, the

,, positive; p sur val e 6 may h?- dju te 7 fremtlme o t n1l in ord r tm et'the v ying' conditions, of the patient, and insure'a suflicientpressure of the gas within his res- 'p atory Organ 'Beeauseof its e redei d flattened for 1n,'my pharyngeal inhaler is best adapt d o. keepth teiiguegiri proper po ition and fits without. danger or heee iing"clogged, in o he threat t he pa en 'lihie' las fe ture, i mat r llyebntrihute o y he con tr ction". of he. boss Which gu rd th three vlateral openi gs by eircling flanges, wh le the bo tom openi gcommunicates directly "wit the. pa ien thre t-J It is pra ieellyimpossible fo l ojttheseldpenings to 'b om frestriet d suf- Z ficiently'to. impa the-breathing of th pa- Having now set forth the preferredembodiment of my invention, I claim as new and desire to secure byLetters Patent the following 1. In an'inhaling appliance, thecombination with a curved tube adapted to fit into thepharynx of thepatient, of means for preventing mouth. breathing associated therewith,and an outwardly-opening valve associated with said tube and adapted topermit the exhalations from the patients "lungs, substantially as setforth.

the combination with a curved tube fitting within the pharynx of thepatient, of an enlarged term nal thereon having a plurality oi open ngsfrom different sides, and means associated J with said tube forpreventing mouth breathing, substantially asset i'orth.

4.1: In an inhaler of the class described, the combination with a'tube,curved and flattened to fit within the mouth and pharynx of the patient,of, an abutment thereon formed of rela ively soft material forengagement, with the teeth of the patient, and means for preventingmouth-breathing, subantially as s f h- 5. In an inhaling device, thecombination with; means for directing anesthetizing gases to therespiratory organs of the patient, of an exhaling valve, ananesthetizinggas pressure supply linje, and agas bag or reservoir positned. im e iat y dja ent to; a inhaler, substantially as set forth.

,6; In an inhaling device, the combination with a member adapted todirect a gaseous anesthetic to the respiratoryorgans of the patient,- ota positive-pressure valve, an anesthetizing-gas pressure supply line,and a stantia ly as. set. f rth.

7:. In inhaling device, they combination w th a tubular memberterminallycurved and fla ten d 0 tv-w l in'the hery-nx of the r t ent, o ee emt dfa iel h e a apted t fi int rier y o the lips of he patien and an,exhaling, v l e Substantially iese o th,-

. In an inhalin .clevice,, the combination with a pharyngea tubularmember terminally curved and flattened to fit within the pharynx ofthepatient, of an apron fitting exteriorly about the patients mouth, andan adjustable exhaling valve, substantially as s t, f0 h 1,270,565 Jail:

9. A pharyngeal inhaling appliance com prising a flattened tube shapedto fit Within the mouth and pharynx of the patient, an inner labialshield and a depressing apron for the lips of the patient, anadjustableexhaling valve, and a gas bag positioned immediately adjacentto said tube through which the gas-supply is adapted to be di rected,substantially as set forth.

10. A pharyngeal inhaling appliance com prising a curved tubular membershaped to fit Within the mouth and pharynx of the patient, a spatulateinner labial shield, a depressing apron for covering the mouth of thepatient, an exhaling valve, and a gas supply reservoir, substantially asset forth.

11. In an inhaling appliance, the combination with a member adapted todirect the anesthetizing reagents to the respiratory organs oi thepatient, of an adjustable positive-pressure valve, anv anesthetizing-gaspressure supply line, and a distensible reservoir positioned immediatelyadjacent to said member, substantially as set forth.

12. In an inhaling device of the class described, the combination with atubular pharyngeal member sha ed to fit Within the mouth and pharynx oft e patient, of an associated inner labial shield fitting between thelips and gums of the patient, an apron fitting exteriorly about andcovering the Epatients inouth, means for securing the same in place andan exhaling valve, substantially as set forth 13. In an anesthetizinginhaler, the combination With a curved tubular member fitting Within thepharynx provided with lateral openings terminally thereof, andprojections or ribs guarding said openings, of means for preventingmouth breathing and an outwardly opening valve associated Withsaid tube,substantially as set forth.

14:. In an anesthetizing inhaler, the combination With a pharyngealinhaler tube, of means for supplying gas thereto, an outwardly openingvalve associated with said tube, and a mouth-covering through which saidtube extends, equipped with means for positively fastening said coveringto the face of the patient, substantially as set forth.

In testimony whereof I do now. afiix my signature in the presence of tWoWitnesses.

CHARLES K. TE'IER.

. Witnesses:

A. G. KNIGHT, ALBERT LYNN LAWRENCE.

Eagles of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, JD. #8.

